# Account Abstraction

By [krishn](https://paragraph.com/@krishn14) · 2024-07-12

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**Issues with Current Wallet Management**
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*   Difficulties in handling private keys
    
*   Costs associated with gas fees
    
*   Privacy preservation challenges
    
*   Dependency on middleman smart contracts for multiple transactions
    

**Introduction to Account Abstraction**
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*   Traditional transactions require private key to sign data
    
*   Account abstraction allows signing data with various methods
    
*   Possible authentication methods:
    
    *   Google account
        
    *   GitHub account
        
    *   Social confirmation (friends' approval)
        
    *   Time-based limitations
        
    *   Spending limits
        
*   Flexibility: Private key equals wallet changes to anything as wallet
    

**Benefits of Account Abstraction**
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*   Customizable wallets (parental controls, approval systems)
    
*   Third-party payment for transactions (no need for personal gas fees)
    

**How Account Abstraction Works**
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*   Two implementations: Ethereum (Entrypoint smart contract) and ZK Sync (native support)
    
*   Overview of the Entrypoint on Ethereum
    
    *   Deploy smart contract to define signing methods
        
    *   Sign with approved method (Google, friends, etc.)
        
    *   Send user operation to alt mempool instead of Ethereum node
        
    *   Alt mempool nodes validate and send transaction on-chain
        
    *   Alt mempool nodes pay for gas (with conditions)
        
    *   ERC 4337 framework and handleOps function of entrypoint smart contract
        
*   ZK Sync's native Account Abstraction
    
    *   Default accounts assume smart contracts for all addresses
        
    *   No need for separate alt mempool nodes
        
    *   Simplified process compared to Ethereum
        

**Additional Components of Account Abstraction**
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*   **Signature Aggregator**: Aggregates multiple signatures for multi-sig setups
    
*   **Pay Master**: Allows defining who will pay for transactions, not necessarily the account owner

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*Originally published on [krishn](https://paragraph.com/@krishn14/account-abstraction)*